Dyes containing 5-cyano-2,4 or 4,6-dichloropyrimidyl fiber-reactive groups

ABSTRACT

Fiber-reactive compounds of the formula 
     
         X-O.sub.2 S-W.sub.1 [F.sub.c ]W.sub.2 -NR-Z, 
    
     and water-soluble salts thereof each cation of which is independently a non-chromophoric cation, and mixtures of such compounds or water-soluble salts, 
     wherein 
     Fc is a chromophore-containing radical of a monoazo, disazo, polyazo, formazan, anthraquinone, dioxazine, phenazine or azomethine dye, which is in metal-free or metal complex form, 
     each of W 1  and W 2  is independently a direct bond or a bridging group which is attached to a carbon atom of an aromatic carbocyclic ring or to a carbon or nitrogen atom of an aromatic heterocyclic ring present in F c , 
     X is --CH═CH 2  or --C 2-4  alkylene--Y, wherein Y is hydroxy or a group which can be split off under alkaline conditions, 
     R is hydrogen, C 1-4  alkyl or C 1-4  alkyl monosubstituted by hydroxy, halo, cyano, --SO 3  H, --OSO 3  H or --COOH, and 
     Z is ##STR1## with the provisos as set forth herein.

This is a continuation-in-part of application Ser. No. 07/627,168, filed Dec. 14, 1990 and now abandoned.

This invention relates to chromophoric compounds containing fiber-reactive groups and a process for their preparation. These compounds are suitable for use as fiber-reactive dyes in any conventional dyeing and printing processes.

More particularly, the invention provides compounds of formula I,

    X-O.sub.2 S-W.sub.1 [F.sub.c ]W.sub.2 -NR-Z                I

and salts thereof,

wherein

F_(c) is a chromophore-containing radical of a monoazo, disazo, polyazo, formazan, anthraquinone, dioxazine, phenazine or azomethine dye, which is in metal-free or metal complex form,

each of W₁ and W₂ is independently a direct bond or a bridging group which is attached to a carbon atom of an aromatic carbocyclic ring or to a carbon or nitrogen atom of an aromatic heterocyclic ring present in F_(c),

X is --CH═CH₂ or --C₂₋₄ alkylene-Y, wherein Y is hydroxy or a radical which can be split off under alkaline conditions, e.g., --OSO₃ H, chloro, bromo, --OPO₃ H₂, --SSO₃ H, --OCOCH₃, --OCOC₆ H₅ or --OSO₂ CH₃,

R is hydrogen, C₁₋₄ alkyl or C₁₋₄ alkyl monosubstituted by hydroxy, halogen, cyano, --SO₃ H, --OSO₃ H or --COOH and

Z is ##STR2## with the provisos that (1) [F_(c) ]does not contain any additional fiber-reactive group, and

(2) when --F_(c) ]is the radical of a monoazo dye containing a group (x) as diazo component radical and a group (y) as coupling component radical, ##STR3## wherein each m is 0 or 1, then either (2.1) (x) bears the --W₂ --NR--Z group and (y) bears the --W1--SO₂ --X group or

(2.2) (x) bears the --W₁ --SO₂ --X group, (y) bears the --W₂ --NR--Z group, and the W₂ radical of said group is other than a direct bond,

and mixtures of metal-free compounds and/or metal complexes of formula I and/or salts of such metal-free compounds and/or salts of such metal complexes.

In the specification, any alkyl or alkylene group present is linear or branched unless indicated otherwise. In any hydroxy-substituted alkyl or alkylene group which is attached to a nitrogen atom, the hydroxy group is preferably bound to a carbon atom which is not directly attached to this nitrogen atom. In any alkylene group containing two hydroxy groups, the hydroxy groups are bound to different carbon atoms which are preferably not adjacent to each other.

In any alkylene chain interrupted by --O-- or --NR-- (in which R is as defined above) which is attached to a nitrogen atom, preferably the --O-- or --NR-- is bound to a carbon atom of the alkylene chain which is not directly attached to the nitrogen atom.

Any halogen is preferably fluorine, chlorine or bromine; more preferably, it is chlorine or bromine, and especially chlorine.

Preferably, F_(c) is the radical of a monoazo disazo formazan or anthraquinone dye which is in metal-free or metal complex form. If the chromophoric radical is in metal complex form, it is preferably in 1:1 copper complex form.

A bridging group W₁ when other than a direct bond is preferably a divalent radical --NR--, --A--, --^(*) NR--A--, --^(*) NRCO--A--, --^(*) CONR--A--, --^(*) SO₂ NR--A--, --^(*) NRCONR--A-- or ##STR4## in which each A is independently C₁₋₈ alkylene which is straight chain or branched and which more preferably is a linear alkylene group; a C₃₋₈ alkylene group which is interrupted by --O-- or --NR--; or a divalent radical ##STR5## wherein Y_(t) is hydroxy, --NHR, --NRR, --NRC₂₋₄ alkylene--SO₂ --X, --C₂₋₄ alkylene--O--C₂₋₄ alkylene--SO₂ --X or ##STR6## in the above-mentioned divalent radicals, each R and each X is independently as defined above, and the atom or free bond indicated with an asterisk is attached to --F_(c) ].

More preferably, W₁ is a direct bond, straight chain C₁₋₄ alkylene, --C₂₋₃ alkylene--O--C₂₋₃ --alkylene--, ##STR7## --^(*) NR_(a) CONR_(a) --C₁₋₄ alkylene-- or ##STR8## wherein each R_(a) is independently as defined below, and each free bond in any phenyl ring is preferably in the meta- or para-position, and the asterisked atom or free bond is attached to --F_(c) ].

Most preferably, W₁ is a direct bond.

A bridging group W₂ when other than a direct bond is preferably a divalent radical --A₁ --, ##STR9## --^(*) CO--A₁ --, --^(*) NR--A₁ --, --^(*) SO₂ --A₁ --, --^(*) SO₂ NR--A₁ -- or --^(*) CONR--A₁ --, wherein each A₁ is independently C₁₋₄ alkylene or C₂₋₄ hydroxyalkylene, or W₂ is ##STR10## or --W₂ --NR-- is preferably ##STR11## in which each A₁ is independently as defined above; in the divalent radicals mentioned with respect to W₂ each R is independently as defined above, and the atom or free bond indicated with an asterisk is attached to --F_(c) ].

More preferably, W₂ is a direct bond, C₁₋₄ alkylene, C₂₋₄ hydroxy-alkylene or ##STR12## in which R_(a) is independently as defined below, the free bond in the phenyl group is preferably in the meta- or para-position and the marked N-atom is attached to --F_(c) ].

Any Y as a radical which can be removed under alkaline conditions is preferably --OSO₃ H.

X is preferably X_(a), where X_(a) is --CH═CH₂, --C₂₋₃ alkylene--OH or --C₂₋₃ alkylene--OSO₃ H; more preferably X is X_(b), where X_(b) is --CH═CH₂, --CH₂ CH₂ OH or --CH₂ CH₂ OSO₃ H; most preferably X is X_(c), where X_(c) is --CH═CH₂ or --CH₂ CH₂ OSO₃ H, especially --CH₂ CH₂ OSO₃ H.

Each R is preferably R_(a), where each R_(a) is independently hydrogen, methyl ethyl 2-hydroxyethyl, --(CH₂)_(r) --SO₃ H, --(CH₂)_(r) --OSO₃ H or --(CH₂)_(r) --COOH, in which r is 1, 2 or 3. More preferably each R is R_(b), where each R_(b) is independently hydrogen or methyl. Most preferably each R is hydrogen.

Preferred compounds of formula I which are in metal-free or metal complex form correspond to the following compounds of types (1) to (6).

In the below-mentioned formulae, the following symbols D₁ to D₄ are used as diazo component radicals:

D₁ is of formula (a) ##STR13##

D₂ is of formula (b) ##STR14##

D₃ is of formula (c) ##STR15##

D₄ is of formula (d) ##STR16## wherein each of R₁ and R₂ is independently hydrogen, halo, C₁₋₄ alkyl, C₁₋₄ alkoxy, --COOH or --SO₃ H,

R₅ is hydrogen, halo, C₁₋₄ alkyl, C₁₋₄ alkoxy, --COOH or --SO₃ H,

R₆ is hydrogen, halo, C₁₋₄ alkyl or C₁₋₄ alkoxy,

n is 0 or 1,

p is 1 or 2,

q is 0, 1 or 2, and

each R, X and Z is as defined above.

D₁ is preferably D_(1a) and more preferably D_(1b), where D_(1a) is of formula (a₁) ##STR17## and D_(1b) is a formula (a₂), ##STR18## wherein

R_(1a) is hydrogen, methyl, methoxy, --COOH or --SO₃ H,

R_(1b) is hydrogen, --COOH or --SO₃ H,

--NH--Z is in the 4- or 5-position, and

R_(b) and Z are as defined above.

D₂ is preferably D_(2a) and more preferably D_(2b), where D_(2a) is of formula (b₁) ##STR19## and D_(2b) is of formula (b₂) ##STR20## wherein m, n, R_(b) and Z are as defined above.

D₃ is preferably D_(3a) and more preferably D_(3b), where D_(3a) is of formula (c₁) ##STR21## and D_(3b) is of formula (c₂) ##STR22## wherein

R_(5a) is hydrogen, methyl, methoxy, --COOH or --SO₃ H,

R_(6a) is hydrogen, methyl or methoxy,

R_(5b) is hydrogen or --SO₃ H,

--SO₂ --X_(c) is in the 4- or 5-position, and

X_(b) and X_(c) are as defined above.

D₄ is preferably D_(4a) and more preferably D_(4b), where D_(4a) is a group of one of the formulae (d₁) to (d₄), ##STR23## wherein X_(b) is as defined above, and D_(4b) is a group of one of the formulae (d₁) to (d₃), wherein each X_(b) is X_(c) where X_(c) is as defined above.

D₁,2 is a diazo component radical D₁ or D₂, and D₃,4 is a diazo component radical D₃ or D₄.

Type (1): monoazo compounds, metal-free ##STR24## in which R, R₁, R₂, R₅, R₆, X, Z and n are as defined above; ##STR25## wherein

R₃ is --CH₃, --COOH or --CONH₂,

R₄ is hydroxy or --NH₂, and

R, R₁, R₂, R₅, R₆, X, Z and n are as defined above.

More preferred are compounds 1a) and 1b) in which

D₁,2 is D_(1a) or D_(2a), especially D_(1b) or D_(2b) ;

D₃,4 is D_(3a) or D_(4a), especially D_(3b) or D_(4b) ;

R₅ is R_(5a), R₆ is R_(6a), X is X_(b), especially X_(c) and

R is R_(b), where each R_(5a), R_(6a), X_(b), X_(c) and R_(b) is independently as defined above. ##STR26## wherein

R₁₀ is hydrogen or C₁₋₄ alkyl,

each Q₁ is independently hydrogen, C₁₋₄ alkyl, C₅₋₆ cycloalkyl, phenyl or phenyl(C₁₋₄ alkyl) wherein the phenyl ring is unsubstituted or substituted by 1 to 3 substituents independently selected from C₁₋₄ alkyl, C₁₋₄ alkoxy, halo, --SO₃ H and --COOH, --COR₁₁ or C₁₋₄ alkyl monosubstituted by --SO₃ H, --OSO₃ H or --COR₁₁, wherein R₁₁ is hydroxy, --NH₂ or C₁₋₄ alkoxy,

each Q₂ is independently hydrogen, CN, --SO₃ H, --COR₁₁, C₁₋₄, alkyl, C₁₋₄ alkyl which is monosubstituted by hydroxy, halo, cyano, C₁₋₄ alkoxy, ##STR27## --SO₃ H, --OSO₃ H or --NH₂, ##STR28## wherein

R₁, R₂ and R₁₁ are as defined above,

R₁₂ is hydrogen, C₁₋₄ alkyl or C₂₋₄ hydroxyalkyl, and

An.sup.⊖ is a non-chromophoric anion;

W₃ is --C₂₋₄ alkylene-- or --C₃₋₄ hydroxyalkylene--,

W₄ is --C₂₋₄ alkylene--, --C₂₋₃ alkylene--O--C₂₋₃ alkylene--,

--C₂₋₃ alkylene--NR--C₂₋₃ alkylene-- or ##STR29## wherein the * denotes the carbon atom attached to the nitrogen atom of the pyridone ring, and each R, X and Z is as defined above.

Any non-chromophoric anion An.sup.⊖ is preferably a chloride or acetate ion.

More preferred are compounds 1c) in which D₃,4 is D_(3a) or D_(4a), particularly D_(3b) or D_(4b) ;

D₁,2 is D_(1a) or D_(2a), particularly D_(1b) or D_(2b),

Q₁ is Q_(1a), where Q_(1a) is hydrogen, methyl ethyl phenyl --COR₁₁, --CH₂ SO₃ H or --CH₂ OSO₃ H; Q₁ is most preferably Q_(1b), where Q_(1b) is methyl or --CH₂ SO₃ H;

Q₂ is Q_(2a), where Q_(2a) is hydrogen, cyano, --SO₃ H, --COR₁₁, methyl, ethyl or --CH₂ SO₃ H; Q₂ is most preferably Q_(2b), where Q_(2b) is hydrogen, --CONH₂ or --CH₂ SO₃ H;

R is R_(b) and X is X_(b), particularly X_(c),

where R_(b), X_(b) and X_(c) are as defined above. ##STR30## wherein

R₇ is hydrogen, C₁₋₄ alkyl, C₁₋₄ alkoxy, --NHCOC₁₋₄ alkyl or --NHCONH₂,

R₈ is hydrogen, C₁₋₄ alkyl, C₁₋₄ alkoxy or --SO₃ H.sub.,

m is 0 or 1,

is 0 or 1,

is 0, 1 or 2, and

R, Z and each R₁₂ independently are as defined above.

More preferred are compounds 1d) wherein D₃,4 is D_(3a) or D_(4a), more preferably D_(3b) or D_(4b) ;

D₃ is D_(3a), more preferably D_(3b) ; and

R is R_(b) as defined above.

Type (2): disazo compounds, metal-free ##STR31## in which

R'₇ has one of the significances of R₇ and

R'₈ has one of the significances of R₈, but both independent thereof, and

R, R₇, R₈ and Z are as defined above.

More preferred are compounds 2a) in which D₃,4 is D_(3a) or D_(4a), especially D_(3b) or D_(4b), both R₇, and R₈, are hydrogen, and

R is R_(b) as defined above. ##STR32##

in which R₇, R₈, R and Z are as defined above.

More preferred are compounds 2b) in which

D₄ is D₄, particularly D_(4b),

D₃ is D_(3a), particularly D_(3b), and R is R_(b) as defined above.

Type (3): monoazo compounds ##STR33## wherein

m is 0 or 1,

n is 0 or 1,

and R, R1, X and Z are as defined above.

More preferred are compounds 3a) wherein

D₁,2 is D_(1a) or D_(2a), more preferably D_(1b) or D_(2b) ;

D₃ is D_(3a), more preferably D_(3b) ;

R₁ is R_(1a) ;

X is X_(b), more preferably X_(c) ; and

R is R_(b), where R_(1a), X_(b), X_(c) and R_(b) are as defined above. ##STR34## in which latter formula --O-- and --N═N-- are ortho to each other and are in the 1,2- or 2,1-positions,

each m is independently 0 or 1,

n is 0 or 1, and

R, R₅, X and Z are as defined above;

or 1:2 metal complexes, particularly 1:2 cobalt or chromium complexes, which consist of

either two monoazo compounds of the formula ##STR35##

which may be the same or different,

wherein

R₁₃ is hydroxy, --NH₂ or --COOH, and

R, R₅, X, Z, m and n are as defined above,

or one monoazo compound of the above formula and any other dye capable of forming a metal complex, particularly an appropriate azo or azomethine dye.

Type 4): disazo compounds, metal-containing, particularly 1:1 copper complexes ##STR36## wherein m is 0 or 1,

n is 0 or 1, and

R, R₃, R₄, R₅, X and Z are as defined above,

Type (5): formazan compounds ##STR37## wherein the --(CH₂)_(n) --NR--Z and --W₅ --SO₂ --X groups may be bound to a carbon atom of any of the three phenyl rings, with the proviso that they are located on different phenyl rings,

W₅ is --^(*) NRCONR--C₂₋₄ alkylene-- or ##STR38##

wherein the * denotes the nitrogen atom attached to the ring system,

each m is independently 0 or 1,

n is 0 or 1, and

R, each R₁ independently, X and Z are as defined above.

Type (6): anthraquinone compounds ##STR39## wherein each of R₁₄ and R₁₅ is independently hydrogen, halo or hydroxy,

W₆ is a direct bond or --C₁₋₄ alkylene--,

m is 0 or 1, and

R, R₁, R₅, R₆, X and Z are as defined above.

When a compound of formula I is in salt form, the cation associated with the sulfo and any carboxy groups is not critical and may be any one of those non-chromophoric cations conventional in the field of fiber-reactive dyes provided that the corresponding salts are water-soluble. Examples of such cations are alkali metal cations and unsubstituted and substituted ammonium cations, e.g., lithium, sodium, potassium, ammonium, mono-, di-, tri- and tetra-methylammonium, tri-ethylammonium and mono-, di- and tri-ethanolammonium.

The preferred cations are the alkali metal cations and ammonium, with sodium being the most preferred.

In a compound of formula I the cations of the sulfo and any carboxy groups can be the same or different, e.g., they can also be a mixture of the above-mentioned cations meaning that the compound of formula I can be in a mixed salt form.

The invention further provides a process for the preparation of compounds of formula I and mixtures thereof comprising reacting a compound of formula II

    X--O.sub.2 S--W.sub.1 [F.sub.c ]W.sub.2 --NHR              III

wherein F_(c), W₁, W₂, X and R are as defined above, or a mixture of compounds of formula II with 5-cyano-2,4,6-trichloropyrimidine.

Any optional metallization may be effected before or after this condensation reaction.

Metal-free or metal-containing monoazo or disazo compounds of type (3) and type (4) may be preferably prepared by the reaction of an appropriate diazo component with an appropriate coupling component of which either the first or the second component has already been condensed with 5-cyano-2,4,6-trichloropyrimidine, and optionally after coupling by treating with a metal-donating compound to obtain the corresponding metal complex.

The compounds of formula I may be isolated in accordance with known methods, for example, by conventional salting out with alkali metal salt, filtering and drying optionally in vacuo and at slightly elevated temperatures.

Depending on the reaction and isolation conditions a compound of formula I is obtained in free acid or preferably salt form or even mixed salt form containing, for example, one or more of the above-mentioned cations. It may be converted from free acid form to a salt form or mixture of salt forms or vice versa or from one salt form to another by conventional means.

It should be noted that the group Z ##STR40## which is bound to the chromophore F_(c) via the bridge --W₂ --NR--, can occur in two isomeric forms, with the floating chlorine substituent in either the 2- or the 6-position, due to the non-selectivity of the condensation reaction with 5-cyano-2,4,6-trichloropyrimidine. The normally-occurring ratio of 2-position to 6-position is about 2:1. In general, it is preferred to use this mixture as it is without resorting to the isolation of a single isomer for use, but should this be desired it can be readily achieved by conventional methods.

The starting compounds of formula II and also the diazo and coupling components used according to the process variant are either known compounds or may be readily made from known materials using known methods.

The compounds of formula I and mixtures thereof are useful as fiber-reactive dyes for dyeing or printing hydroxy group- or nitrogen-containing organic substrates. Preferred substrates are leather and fiber material comprising natural or synthetic polyamides and, particularly, natural or regenerated cellulose such as cotton, viscose and spun rayon. The most preferred substrate is textile material comprising cotton.

Dyeing or printing may be effected in accordance with known methods conventional in the fiber-reactive dye field. Preferably, for the compounds of formula I the exhaust dyeing method is used at temperatures within the range of 30° to 600° C.

The compounds of this invention have good compatibility with known fiber-reactive dyes; they may be applied alone or in combination with appropriate fiber-reactive dyes of the same class having analogous dyeing properties such as common fastness properties and the extent of ability to exhaust from the dyebath onto the fiber. The dyeings obtained with such combination mixtures have good fastness properties and are comparable to those obtained with a single dye.

The compounds of formula I give good exhaust and fixation yields. Moreover, any unfixed compound can be easily washed off the substrate. The dyeings and prints obtained exhibit good dry and wet light fastness and also good wet fastness properties such as wash, water, sea water and sweat fastness. They also exhibit good resistance to oxidising agents such as chlorinated water, hypochlorite bleach, peroxide bleach and perborate-containing washing detergents.

The invention is further illustrated with reference to the following non-limiting examples, in which all parts are expressed by weight unless otherwise stated and all temperatures are in degrees Centigrade.

EXAMPLE 1

14 Parts of 4-aminophenyl-(2'-sulfatoethyl)sulfone are pasted with 50 parts of water. To this mixture 7 parts of 30% hydrochloric acid are added and the mixture is cooled to 00 with 50 parts of ice. Diazotization is effected under these conditions by adding 12.6 parts of a 4N sodium nitrite solution. After diazotization is completed, 9.8 parts of solid 1-(3-N-methylaminopropyl)-4-methyl-6-hydroxypyridone-2 are added. The coupling reaction is carried out at pH 7 (obtained by the addition of 8 parts of a 20% by weight solution of sodium carbonate). The thus formed compound of the formula ##STR41## precipitates and is filtered off.

33.4 parts of this wet compound are stirred into 1000 parts of water, and 8 parts of 5-cyano-2,4,6-trichloropyrimidine which have been stirred for 10 minutes in 100 parts of an ice-water mixture, are added thereto. The pH of the reaction mixture is adjusted to 6.0 by the addition of 20 parts of a 10% by weight solution of sodium hydroxide; simultaneously, the temperature is elevated to 40°. After three hours the condensation is completed. The reaction mixture is diluted with 200 parts of water and filtered clear at 50°, and the product is salted out with sodium chloride. The thus obtained dye is filtered and dried; it has the formula ##STR42## and dyes cotton a greenish-yellow shade. These dyeings exhibit good fastness properties.

EXAMPLE 2

14 Parts of 4-aminophenyl-(2'-sulfatoethyl)sulfone are diazotized as described in Example 1. To the resultant mixture 8.5 parts of 1-(3'-aminophenyl)-3-methylpyrazolone-5 in solid form are added. Coupling is effected at a pH of 7.0 (obtained by the addition of 33 parts of a 10% by weight solution of sodium hydroxide). After a 60 minute reaction time, the mixture is salted out with sodium chloride. The resinous residue is separated and dissolved in 300 parts of water. To this solution, 16 parts of 5-cyano-2,4,6-trichloropyrimidine (which have been treated in the same way as described in Example 1) is added. The pH is kept at 7.0 for an hour with the addition of 15 parts of a 10% by weight sodium hydroxide solution. Subsequently, the mixture is heated to 50° and filtered clear. The obtained dye is salted out by adding sodium chloride, filtered and dried. It has the formula ##STR43## and dyes cotton in yellow tones. These dyeings exhibit good fastness properties.

EXAMPLES 3 TO 97

By analogy with the method described in Example 1 or 2, using appropriate starting compounds to form the desired chromophoric part F_(c), further metal-free compounds of formula I may be prepared which are listed in the following Tables 1 to 9. At the top of each of these Tables the corresponding formula is given in which the symbols are as defined in the Table.

The compounds of Examples 3 to 97 may be applied to substrates comprising cellulose fibers, and particularly to textile material comprising cotton, according to conventional exhaust dyeing or printing processes, where dyeings and prints of the indicated shade are obtained. These dyeings and prints on cotton exhibit good light and wet fastness properties, and they are stable in the presence of oxidizing agents.

In all of the following formulae and Tables, the group Z is ##STR44## the group Z₁ is --SO₂ CH₂ CH₂ OSO₃ H.

                  TABLE 1                                                          ______________________________________                                         compounds of formula (T1)                                                       ##STR45##                    (T1)                                             Ex-                                   Position                                 ample                          R.sub.2                                                                               of                                       No.   D.sub.T1          R      (position)                                                                            NHZ                                      ______________________________________                                                ##STR46##        H      SO.sub.3 H(2)                                                                         5                                        4      "                H      "      4                                        5                                                                                     ##STR47##        H      "      5                                        6                                                                                     ##STR48##        H      "      4                                        7      "                CH.sub.3                                                                              "      5                                        8                                                                                     ##STR49##        H      "      5                                        9                                                                                     ##STR50##        CH.sub.3                                                                              "      4                                        10                                                                                    ##STR51##        H      H      3                                        11     "                H      H      4                                        12                                                                                    ##STR52##        H      SO.sub.3 H(2)                                                                         5                                        13                                                                                    ##STR53##        H      H      3                                        14                                                                                    ##STR54##        H      SO.sub.3 H(2)                                                                         5                                        ______________________________________                                    

The dyeings and prints on cotton obtained with the dyes of Examples 3 to 14 have a greenish-yellow shade.

                  TABLE 2                                                          ______________________________________                                         Compounds of formula T2                                                         ##STR55##                    (T2)                                             Example  Position of        R.sub.2                                                                               Position of                                 No.      NHZ        R       (position)                                                                            Z.sub.1                                     ______________________________________                                         15       4          H       H      3                                           16       5          H       H      4                                           17       5          CH.sub.3                                                                               H      3                                           18       5          H       CH.sub.3 (2)                                                                          4                                           19       4          H       OCH.sub.3 (2)                                                                         5                                           20       4          CH.sub.3                                                                               H      4                                           ______________________________________                                    

The compounds of Examples 15 to 20 dye cotton a greenish-yellow shade.

                  TABLE 3                                                          ______________________________________                                         Compounds of formula T3                                                         ##STR56##                    (T3)                                             Example  Position of        Position of                                        No.      SO.sub.3 H  R      NRZ       R.sub.3                                  ______________________________________                                         21       4           H      3         CH.sub.3                                 22       2           H      4         COOH                                     23       2           CH.sub.3                                                                              4         CH.sub.3                                 24       2           H      4          "                                       25       4           H      3         COOH                                     26       4           CH.sub.3                                                                              3          "                                       27       2           H      5         CH.sub.3                                 ______________________________________                                    

The compounds of Examples 21 to 27 dye cotton a greenish-yellow shade.

                                      TABLE 4                                      __________________________________________________________________________     Compounds of formula T4                                                         ##STR57##                             (T4)                                    Example                                                                             Position                       Position                                   No.  of Z.sub.1                                                                          R.sub.5                                                                             R.sub.6                                                                             R.sub.3                                                                            R.sub.4                                                                           R.sub.1                                                                             R.sub.2                                                                            of NHZ                                     __________________________________________________________________________     28   3    H    H    CH.sub.3                                                                           OH H    H   3                                          29   4    OCH.sub.3 (2)                                                                       H    COOH                                                                               OH H    H   4                                          30   4    SO.sub.3 H(2)                                                                       H    CH.sub.3                                                                           OH H    H   4                                          31   3    H    H    COOH                                                                               OH H    H   4                                          32   3    OCH.sub.3 (4)                                                                       H    CH.sub.3                                                                           NH.sub.2                                                                          H    H   3                                          33   3    H    H     "   " H    H   3                                          34   4    OCH.sub.3 (2)                                                                       CH.sub.3 (5)                                                                         "  OH H    H   4                                          35   4     "   H     "  OH H    H   3                                          36   4     "   OCH.sub.3 (5)                                                                       COOH                                                                               OH SO.sub.3 H(2)                                                                       H   3                                          37   4    H    H     "  OH  "   H   4                                          38   4    SO.sub.3 H(2)                                                                       H    CH.sub.3                                                                           OH SO.sub.3 H(3)                                                                       CH.sub.3 (6)                                                                       5                                          39   4     "   H    COOH                                                                               OH SO.sub.3 H(2)                                                                       H   4                                          __________________________________________________________________________

The dyes of Examples 28 to 39 give greenish-yellow dyeings on cotton.

                                      TABLE 5                                      __________________________________________________________________________     Compounds of formula T5                                                         ##STR58##                        (T5)                                         Example                                                                             Position                 Position                                         No.  of Z.sub.1                                                                          R.sub.5                                                                            R.sub.3                                                                            R.sub.4                                                                           R.sub.1                                                                             R.sub.2                                                                            of NHZ                                           __________________________________________________________________________     40   6    SO.sub.3 H                                                                         CH.sub.3                                                                           OH H    H   3                                                41   6     "   "  NH.sub.2                                                                          SO.sub.3 H(2)                                                                       H   3                                                42   8    H   COOH                                                                               OH SO.sub.3 H(3)                                                                       CH.sub.3 (6)                                                                       5                                                43   8    H   CH.sub. 3                                                                          NH.sub.2                                                                          H    H   3                                                44   6    SO.sub.3 H                                                                          "  OH H    H   4                                                45   6     "  COOH                                                                               OH SO.sub.3 H(2)                                                                       H   4                                                46   8    H   CH.sub.3                                                                           OH SO.sub.3 H(3)                                                                       CH.sub.3 (6)                                                                       5                                                47   8    H   COOH                                                                               OH H    H   4                                                48   6    SO.sub.3 H                                                                         CH.sub.3                                                                           OH SO.sub.3 H(2)                                                                       H   4                                                __________________________________________________________________________

The compounds of Examples 40 to 48 dye cotton a greenish-yellow shade.

                  TABLE 6                                                          ______________________________________                                         Compounds of formula T6                                                         ##STR59##                    (T6)                                                      Position                                                              Example  of Z.sub.1 R.sub.5   R.sub.6 R.sub.10                                 ______________________________________                                         49       4          H         H       H                                        50       4          OCH.sub.3 (2)                                                                            H       H                                        51       4          SO.sub.3 H(2)                                                                            H       C.sub.2 H.sub.5                          52       3          H         H       H                                        53       3          OCH.sub.3 (4)                                                                            H       CH.sub.3                                 54       3          H         H       C.sub.2 H.sub.5                          55       4          OCH.sub.3 (2)                                                                            CH.sub.3 (5)                                                                           CH.sub.3                                 56       4           "        OCH.sub.3 (5)                                                                          C.sub.2 H.sub.5                          57       4          H         H        "                                       58       4          SO.sub.3 H(2)                                                                            H       H                                        ______________________________________                                    

The dyeings on cotton obtained with the compounds of Examples 49 to 58 have a yellow shade.

                                      TABLE 7                                      __________________________________________________________________________     Compounds of formula T7                                                         ##STR60##                                 (T7)                                Example                                                                             Position                                                                  No.  of Z.sub.1                                                                          R.sub.5                                                                             R.sub.6                                                                             Q.sub.1                                                                               Q.sub.2                                                                               W.sub.3   R                                  __________________________________________________________________________     59   4    H    H    CH.sub.3                                                                              H      CH.sub.2 CH.sub.2                                                                        H                                  60   4    SO.sub.3 H(2)                                                                       H     "     CONH.sub.2                                                                            *CH.sub.2 CHCH.sub.3                                                                     H                                  61   4    H    H     "      "     CH.sub.2 CH.sub.2                                                                        H                                  62   3    H    H     "     H      CH.sub.2 CH.sub.2 CH.sub.2                                                               H                                  63   4    OCH.sub.3 (2)                                                                       H     "     H       "        CH.sub.3                           64   3    H    H     "     H       "         "                                 65   4    OCH.sub.3 (2)                                                                       H     "     CH.sub.2 SO.sub.3 H                                                                    "         "                                 66   4    H    H    CH.sub.2 SO.sub.3 H                                                                   H      CH.sub.2 CH.sub.2                                                                        H                                  67   4    OCH.sub.3 (2)                                                                       CH.sub.3 (5)                                                                        CH.sub.3                                                                              CONH.sub.2                                                                            *CH.sub.2 CHCH.sub.3                                                                     H                                  68   3     "   H     "      "     CH.sub.2 CH.sub.2                                                                        H                                  69   3     "   OCH.sub.3 (5)                                                                        "     H      CH.sub.2 CH.sub.2 CH.sub.2                                                               CH.sub.3                           70   3    H    H     "     CONH.sub.2                                                                             "         "                                 71   3    SO.sub.3 H(2)                                                                       H    CH.sub.2 SO.sub.3 H                                                                    "     CH.sub.2 CH.sub.2                                                                        H                                  72   3     "   H    CH.sub.3                                                                              H      *CH.sub.2 CHCH.sub.3                                                                     H                                  73   3     "   H     "     CH.sub.2 SO.sub. 3 H                                                                  CH.sub.2 CH.sub.2 CH.sub.2                                                               CH.sub.3                           __________________________________________________________________________      In W.sub.3 the * denotes the carbon atom bound to the nitrogen atom of th      pyridone ring.                                                           

The compounds of Examples 59 to 73 dye cotton in yellow tones.

                                      TABLE 8                                      __________________________________________________________________________     Compounds of formula T8                                                         ##STR61##                           (T8)                                      Example                                                                             Position                                                                  No.  of Z.sub.1                                                                          R.sub.5                                                                            Q.sub.1                                                                               Q.sub.2                                                                               W.sub.3  R                                         __________________________________________________________________________     74   6    H   CH.sub.3                                                                              H      CH.sub.2 CH.sub.2                                                                       H                                         75   6    H   CH.sub.2 SO.sub.3 H                                                                   H                                                                                      ##STR62##                                                                              H                                         76   6    H   CH.sub.3                                                                              CONH.sub.2                                                                            CH.sub.2 CH.sub.2 CH.sub.2                                                              CH.sub.3                                  77   7    H    "     CH.sub.2 SO.sub.3 H                                                                   CH.sub.2 CH.sub.2                                                                       H                                         78   8    SO.sub. 3 H                                                                         "     H      CH.sub.2 CH.sub.2 CH.sub.2                                                              CH.sub.3                                  79   6    H    "     H       "        "                                        80   8    SO.sub.3 H                                                                         CH.sub.2 SO.sub.3 H                                                                   CONH.sub.2                                                                             "        "                                        81   6     "  CH.sub.3                                                                              H       "       H                                         82   7     "   "     H      CH.sub.2 CH.sub.2                                                                       H                                         83   7    H    "     CH.sub.2 SO.sub.3 H                                                                    ##STR63##                                                                              H                                         84   8    H    "      "      "       H                                         __________________________________________________________________________      In W.sub.3 the * denotes the carbon atom bound to the nitrogen atom of th      pyridone ring.                                                           

Each compound of Examples 74 to 84 dyes cotton a yellow shade.

                                      TABLE 9                                      __________________________________________________________________________     Compounds of formula T9                                                         ##STR64##                               (T9)                                  Example                                                                        No.  D.sub.T9   Q.sub.1                                                                               Q.sub.2                                                                               W.sub.4                                          __________________________________________________________________________     85                                                                                   ##STR65## CH.sub.3                                                                              CH.sub.2 SO.sub.3 H                                                                    ##STR66##                                       86                                                                                   ##STR67## CH.sub.2 SO.sub.3 H                                                                   CN     "                                                87   "          CH.sub.3                                                                              H      "                                                88                                                                                   ##STR68##  "     H      CH.sub.2 CH.sub.2 OCH.sub.2 CH.sub.2             89   "           "     CH.sub.2 SO.sub.3 H                                                                   "                                                90   "           "     CONH.sub.2                                                                             ##STR69##                                       91                                                                                   ##STR70##  "     H      "                                                92   "           "     CONH.sub.2                                                                            CH.sub.2 CH.sub.2 OCH.sub.2 CH.sub.2             93                                                                                   ##STR71## CH.sub.2 SO.sub.3 H                                                                   H      "                                                94   "          CH.sub.3                                                                              H                                                                                      ##STR72##                                       95   "           "     CONH.sub.2                                                                            "                                                96   "           "     CH.sub.2 SO.sub.3 H                                                                   "                                                97   "           "     H                                                                                      ##STR73##                                       __________________________________________________________________________      In W.sub.4 the marked carbon atom is bound to the nitrogen atom of the         pyridone ring; in D.sub.T9 the marked free bond is attached to the azo         group.                                                                   

The compounds of Examples 85 to 97 dye cotton a yellow shade.

EXAMPLE 98

36.1 Parts of 4-amino-3-sulfophenyl-(2'-sulfatoethyl)sulfone are stirred into 200 parts of water. The resultant pH is less than 1. At 0°-50° diazotisation is effected according to conventional method using 25 parts of a 4N sodium nitrite solution. The obtained diazonium salt compound is reacted, at a temperature of 0° and pH 4.5, with 15.1 parts of 3-aminophenyl urea. After coupling has been completed, the suspension is filtered, and the residue is then stirred into 200 parts of water. To this mixture 22.9 parts of 5-cyano-2,4,6-trichloropyrimidine is added, and the reaction is carried out at pH 7.0. After three hours at 35° the reaction is completed. The dye thus formed is salted out with sodium chloride, collected by filtration and dried. It has the formula ##STR74## and dyes cotton a yellow shade. These dyeings exhibit good fastness properties.

EXAMPLES 99 TO 112

By analogy with the method described in Example 98, using appropriate starting compounds, further metal-free monoazo compounds may be prepared. They are of formula T10 ##STR75## in which the symbols are as defined in Table 10. The compounds of Examples 99 to 112 dye cotton a yellow shade. These dyeings exhibit good light and wet fastness properties and are stable in the presence of oxidizing agents.

                  TABLE 10                                                         ______________________________________                                         compounds of formula (T10)                                                     Ex-                                                                            ample                                                                          No.   D.sub.T10          R.sub.7     R.sub.8                                   ______________________________________                                          99                                                                                   ##STR76##         NHCONH.sub.2                                                                               H                                         100   "                  NHCOCH.sub.3                                                                               H                                         101   "                  H           OCH.sub.3                                 102                                                                                   ##STR77##         NHCONH.sub.2                                                                               H                                         103   "                  CH.sub.3    CH.sub.3                                  104   "                  OCH.sub.3   OCH.sub.3                                 105                                                                                   ##STR78##         NHCOCH.sub.3                                                                               H                                         106   "                  CH.sub.3    H                                         107   "                   "          OCH.sub.3                                 108                                                                                   ##STR79##         NHCONH.sub.2                                                                               H                                         109                                                                                   ##STR80##          "          H                                         110                                                                                   ##STR81##         CH.sub.3    OCH.sub.3                                 111                                                                                   ##STR82##          "           "                                        112   "                  NHCOCH.sub.3                                                                               H                                         ______________________________________                                    

EXAMPLE 113

41.1 Parts of 2-amino-l-sulfonaphthyl-6-(2'-sulfatoethyl)sulfone is stirred into 250 parts of water whereby a pH less than 1 results. Diazotization is carried out by adding 25 parts of a 4N sodium nitrite solution at 0°-5°. The diazonium salt compound is reacted with 13.7 parts of 1-amino-2-methoxy-5-methylbenzene at a temperature not higher than 5° and at pH 5. The resulting product is further diazotized with 25 parts of a 4N sodium nitrite solution in the presence of 50 parts of a 30% by weight solution of hydrochloric acid, followed by a coupling reaction in the presence of 20.5 parts of aniline-ω-methanesulfonic acid. Coupling is effected at a temperature not higher than 100° and at pH 4.5. After the reaction has been completed, the pH is adjusted to about 13 by the addition of sodium hydroxide solution. Then, at a temperature not higher than 300, saponification is effected by slowly adding 17 parts of a 40% by weight hydrogen peroxide dropwise. The reaction of the resultant free amino group with 22.9 parts of 5-cyano-2,4,6-trichloropyrimidine is carried out at 35° and at pH of 7.0. After conventional isolation, the dye of the formula ##STR83## is obtained in the form of a yellowish-brown powder. On cotton this dye gives orange dyeings which exhibit good fastness properties.

EXAMPLE 114

If instead of the 41.1 parts of 2-amino-1-sulfonaphthyl-6-(2'-sulfatoethyl)sulfone used in Example 113, 28.1 parts of 4-amino-phenyl-(2'-sulfatoethyl)sulfone which were stirred into 200 parts of water is used, and otherwise the preparation method described in Example 113 is applied accordingly, the dye having the formula ##STR84## is obtained which dyes cotton an orange shade. These dyeings exhibit good light and wet fastness properties and are resistant to influences of oxidation.

EXAMPLES 115 TO 125

By analogy with the method described in Example 113 or 114, using appropriate starting compounds, further disazo compounds which are metal-free may be prepared. They correspond to formula (T11) ##STR85## in which the symbols are as defined in Table 11. The compounds of Examples 115 to 125 dye cotton in orange tones. These dyeings have good fastness properties.

                  TABLE 11                                                         ______________________________________                                         compounds of formula (T11)                                                     Ex-                                                                            ample                                                                          No.   D.sub.T11          R.sub.7     R.sub.8                                   ______________________________________                                         115                                                                                   ##STR86##         H           OCH.sub.3                                 116   "                  NHCOCH.sub.3                                                                               H                                         117   "                  NHCONH.sub.2                                                                               H                                         118                                                                                   ##STR87##         CH.sub.3    H                                         119   "                  OCH.sub.3   OCH.sub.3                                 120                                                                                   ##STR88##         CH.sub.3    H                                         121                                                                                   ##STR89##          "          OCH.sub.3                                 122   "                  NHCOCH.sub.3                                                                               H                                         123                                                                                   ##STR90##         CH.sub.3    H                                         124                                                                                   ##STR91##          "          H                                         125   "                  NHCOCH.sub.3                                                                               H                                         ______________________________________                                    

EXAMPLE 126

23.9 Parts of 2-amino-5-hydroxynaphthalene-7-sulfonic acid are stirred into 300 parts of water at 25° and are dissolved by the addition of 13 parts of a 30% by weight solution of sodium hydroxide.

22.9 Parts of 5-cyano-2,4,6-trichloropyrimidine is dissolved in 120 parts of acetone, and the solution is stirred into a mixture of 120 parts of ice and 60 parts of water. To this mixture the solution of 2-amino-5-hydroxynaphthalene-7-sulfonic acid described in the previous paragraph is added dropwise over a period of 30 minutes at 0°-5° during which time, a pH of 2.4-2.7 is maintained by the addition of dilute sodium carbonate solution. Stirring is effected until no free amino group is detectable.

The resultant suspension is added to the diazonium salt compound of 31.1 parts of 2-amino-1-methoxy-4-(2'-sulfatoethyl) sulfonylbenzene which has been prepared in accordance with conventional methods. At 0°-5°, the pH of the coupling mixture is adjusted to 7.1 by adding dilute sodium carbonate solution. Stirring is effected at the same pH until coupling is completed. The dye thus formed is salted out and isolated. After drying the dye of the formula ##STR92## is obtained in form of a dark red powder which dissolves in water with a red color and dyes cotton in scarlet tones. These dyeings exhibit good light and wet fastness properties and are resistant towards oxidative influences.

EXAMPLE 127

To a suspension consisting of 23.9 parts of 2-amino-5-hydroxy-naphthalene-7-sulfonic acid and 22.9 parts of 5-cyano-2,4,6-trichloropyrimidine which has been prepared in accordance with the method described in Example 126, the diazonium salt solution of 29.7 parts of 2-amino-1-hydroxy-4-(2'-sulfatoethyl)sulfonylbenzene prepared in conventional manner, is added at 5°-8° over a period of 30 minutes. The pH is maintained at 8-9 by the simultaneous addition of dilute sodium carbonate solution. After the coupling reaction is completed, the pH of the reaction mixture is adjusted to 5.5 by adding hydrochloric acid. Then, an aqueous solution of 23.7 parts of copper sulfate·5H₂ O is added dropwise over a period of 30 minutes, keeping the pH of the mixture at 5.5-6.5 by the dropwise addition of dilute sodium carbonate solution. After coppering is complete, the product is salted out and isolated. After drying the dye of the formula ##STR93## is obtained in form of a dark powder which dissolves in water with bordeaux-red colour and dyes cotton in bordeaux-red tones. These dyeings have good light and wet fastness properties and are resistant towards oxidative influences.

EXAMPLE 128

6.1 Parts of 3-amino-5-sulfophenyl-(2'-sulfatoethyl)sulfone is stirred into 200 parts of water, whereby a pH below 1 results. Diazotization is effected in conventional manner with 25 parts of a 4N sodium nitrite solution at a temperature not higher than 5°. The coupling reaction is carried out using 41.1 parts of the condensation product of 2-amino-5-hydroxynaphthalene-7-sulfonic acid with 5-cyano-2,4,6-trichloropyrimidine prepared as described in Example 126, at room temperature and pH 5-6. Subsequently, oxidative coppering is effected at room temperature using 25 parts of copper sulfate·5H₂ O in the presence of 58 parts of sodium acetate and 8 parts of borax, during which 48 parts of 40% by weight hydrogen peroxide is added dropwise to the reaction mixture over a period of 15 minutes. After a further 30 minutes, the coppering is complete and the thus formed dye is isolated. It is of the formula ##STR94## and is obtained in form of a dark powder. This dye gives ruby-red dyeings on cotton which exhibit good fastness properties.

EXAMPLE 129

By analogy with the method described in Example 128 using as starting compound the condensation product of 3-amino-5-nitrobenzene-sulfonic acid and 5-cyano-2,4,6-trichloropyrimidine in which product the nitro group has been reduced and the resulting free amino group has been diazotised, from which by coupling with 1-hydroxy-6-(2'-sulfatoethyl)sulfonylnaphthalene-3-sulfonic acid and finally oxidative coppering, the dye of the formula ##STR95## is obtained; it dyes cotton in bluish ruby-red tones. These dyeings exhibit very good fastness properties.

EXAMPLE 130

23 Parts of 5-cyano-2,4,6-trichloropyrimidine are dissolved in 120 parts of acetone; this solution is stirred into a mixture of 60 parts of water and 100 parts of ice. To the resultant cold suspension, an ice-cold solution of 21.9 parts of 1-(3'-aminobenzoylamino)-8-hydroxy-naphthalene-3,6-disulfonic acid in water which has been adjusted to pH 5, is added, while simultaneously adding a dilute sodium carbonate solution in such a way that the pH of the reaction mixture is kept at 4.5. After the condensation is complete, the pH of the suspension is adjusted to 6. To this suspension the diazonium salt compound of 23.3 parts of 4-aminophenyl-(2'-sulfatoethyl)sulfone (prepared according to a conventional method) is added at 0°-50°, and the pH of the mixture is maintained at 6-6.5 by the addition of sodium carbonate solution. The dye thus obtained is salted out with sodium chloride, isolated by filtration and dried. It has the formula ##STR96## and dyes cotton a brilliant bluish-red shade. These dyeings exhibit notably good light and wet fastness properties and are resistant towards oxidative influences.

EXAMPLES 131 TO 162

By analogy with the method described in Example 130, using appropriate starting materials, further metal-free monoazo compounds may be prepared which are listed in the following Tables 12 and 13. At the top of each of these Tables the corresponding formula is given in which the symbols are as defined in Tables 12 and 13. The compounds of Examples 131 to 162 dye cotton a brilliant bluish-red shade. The dyeings show good fastness properties.

                                      TABLE 12                                     __________________________________________________________________________     compounds of formula T12                                                        ##STR97##                            (T12)                                    Example No.                                                                           Position of Z.sub.1                                                                    R.sub.5                                                                            Position of SO.sub.3 H                                                                   n Position of NHZ                                 __________________________________________________________________________     131    4       H   3         1 4                                               132    4       SO.sub.3 H                                                                         3         1 4                                               133    4       H   4         1 4                                               134    4       H   4         1 3                                               135    4       SO.sub.3 H                                                                         4         1 3                                               136    4       "   3         1 3                                               137    4       "   4         1 4                                               138    4       H   3         0 --                                              139    4       H   3         0 --                                              140    4       SO.sub.3 H                                                                         3         0 --                                              141    4       "   4         0 --                                              142    3       H   3         1 3                                               143    3       H   3         1 4                                               144    3       H   4         1 4                                               145    3       H   4         1 3                                               146    3       H   3         0 --                                              147    3       H   4         0 --                                              __________________________________________________________________________

                                      TABLE 13                                     __________________________________________________________________________     compounds of formula (T13)                                                      ##STR98##                                 (T13)                               Example No.                                                                           R.sub.5                                                                              Position of Z.sub.1                                                                    Position of SO.sub.3 H                                                                     n Position of NHZ                             __________________________________________________________________________     148    SO.sub.3 H                                                                           6       3           1 3                                           149    "     6       3           1 4                                           150    "     6       4           1 4                                           151    "     6       4           1 3                                           152    H     6       3           0 --                                          153    H     6       4           0 --                                          154    SO.sub.3 H                                                                           8       3           1 3                                           155    "     8       3           1 4                                           156    "     8       4           1 3                                           157    "     8       4           1 4                                           158    H     8       4           0 --                                          159    H     8       3           1 3                                           160    H     8       3           1 4                                           161    H     8       4           1 3                                           162    H     8       3           0 --                                          __________________________________________________________________________

EXAMPLE 163

29.7 Parts of 1-amino-2-hydroxy-5-(2'-sulfatoethyl)sulfonylbenzene is diazotized in known manner and added to 23.9 parts of 2-amino-5-hydroxynaphthalene-7-sulfonic acid. The pH of this mixture is slowly adjusted to 8 by adding dilute sodium carbonate solution. The reaction temperature is 0°-50°. To the monoazo compound thus formed 6.9 parts of sodium nitrite is added and the reaction mixture is slowly added dropwise to hydrochloric acid at 00°-30°. To the resultant diazonium salt compound, 61 parts of the coupling component of the formula ##STR99## which has been prepared in accordance with the method described in Example 130, are added. By the dropwise addition of dilute sodium carbonate solution the pH of the reaction mixture is slowly adjusted to 6.5-7. After coupling has been completed the pH of the dye solution is adjusted to 5.5 by adding hydrochloric acid. To this solution an aqueous solution of 24.9 parts of copper sulfate·5H₂ O is added dropwise over a period of 30 minutes. Simultaneously, the pH of the reaction mixture is kept at 5.5-6.5 by adding sodium carbonate solution. After coppering is complete, the dye is isolated by salting out and filtration and is dried. It has the formula ##STR100## and dyes cotton in navy-blue shades, whereby dyeings having good fastness properties are obtained.

EXAMPLES 164-217

In the following Tables 14 to 19 further compounds of formula I are listed by which formazan compounds of type (5) are exemplified. They may be prepared by a condensation comprising reacting an appropriate hydrazine compound, a diazonium compound and an aldehyde in the presence of copper salts by analogy with known methods. At the top of each of these Tables the corresponding formula is given in which the symbols are as defined in the following Table.

The compounds listed in Tables 14 to 19 dye cotton a dark blue shade whereby dyeings with good fastness properties are obtained.

                                      TABLE 14                                     __________________________________________________________________________     compounds of formula (T14)                                                      ##STR101##                                   (T14)                            Example                                                                               Position of                  Position of                                No.  m SO.sub.3 H                                                                           W.sub.1      X         W.sub.1 SO.sub.2 X                                                                      R.sub.1                           __________________________________________________________________________     164  0 --    direct bond  CH.sub.2 CH.sub.2 OSO.sub.3 H                                                            4        H                                 165  1 4     "            "         4        H                                 166  1 5     "            "         4        H                                 167  0 --    *NHCONHCH.sub.2 CH.sub.2                                                                    "         3        SO.sub.3 H(4)                     168  1 4     "            "         4        H                                 169  1 5     "            CHCH.sub.2                                                                               3        SO.sub.3 H(4)                     __________________________________________________________________________

In W₁ the marked N-atom is attached to a carbon atom of the phenyl ring.

                  TABLE 15                                                         ______________________________________                                         compounds of formula (T15)                                                      ##STR102##                  (T15)                                             Example No.    m     Position of SO.sub.3 H                                    ______________________________________                                         170            0     --                                                        171            1     4                                                         172            1     5                                                         ______________________________________                                    

                                      TABLE 16                                     __________________________________________________________________________     compounds of formula (T16)                                                      ##STR103##                               (T16)                                Example                      Position of                                                                               Position of                            No.  W.sub.1       X         W.sub.1 SO.sub.2 X                                                                      q SO.sub.3 H                             __________________________________________________________________________     173  direct bond   CH.sub.2 CH.sub.2 OSO.sub.3 H                                                            4        0 --                                     174  "             "         4        1 4                                      175  "             "         4        2 2, 4                                   176  "             "         5        0 --                                     177  "             "         5        1 4                                      178  "             "         5        2 2, 4                                   179                                                                                  ##STR104##   "         5        1 4                                      180  "             "         4        1 4                                      181  "             CHCH.sub.3                                                                               5        2 2, 4                                   182                                                                                  ##STR105##   CH.sub.2 CH.sub.2 OSO.sub.3 H                                                            5        1 2                                      183  *NHCONHCH.sub.2 CH.sub.2                                                                     CH.sub.2 CH.sub.2 OSO.sub.3 H                                                            5        1 4                                      184  "             "         4        1 4                                      185  "             CHCH.sub.2                                                                               5        2 2, 4                                   __________________________________________________________________________

In W₁ the marked N-atom is attached to a carbon atom of the phenyl ring.

                                      TABLE 17                                     __________________________________________________________________________     compounds of formula (T17)                                                      ##STR106##                      (T17)                                                          Position     Position                                         Example No.                                                                           X         of SO.sub.2 X                                                                          R.sub.1                                                                             of SO.sub.3 H                                    __________________________________________________________________________     186    CH.sub.2 CH.sub.2 OSO.sub.3 H                                                            4       SO.sub.3 H(3)                                                                       5                                                187    CHCH.sub.2                                                                               5       "    5                                                188    CH.sub.2 CH.sub.2 OSO.sub.3 H                                                            5       "    5                                                189    "         5       Cl(3)                                                                               5                                                190    "         4       "    5                                                191    "         4       Cl(5)                                                                               3                                                192    "         5       "    3                                                __________________________________________________________________________

                  TABLE 18                                                         ______________________________________                                         compounds of formula (T18)                                                      ##STR107##                  (T18)                                             Example No.                                                                             Position of NH-Z                                                                              q     Position of SO.sub.3 H                           ______________________________________                                         193      4              1     2                                                194      4              0     --                                               195      4              1     4                                                196      4              2     2, 4                                             197      5              1     2                                                198      5              1     4                                                199      5              2     2, 4                                             200      5              0     --                                               ______________________________________                                    

                                      TABLE 19                                     __________________________________________________________________________     compounds of formula (T19)                                                      ##STR108##                              (T19)                                 Example                                                                             Position                          Position                                No.  of NHZ W.sub.1        X         q of SO.sub.3 H                           __________________________________________________________________________     201  4      *NHCONHCH.sub.2 CH.sub.2                                                                      CH.sub.2 CH.sub.2 OSO.sub.3 H                                                            1 2                                       202  4      "              "         0 --                                      203  4      "              "         1 4                                       204  5      "              "         1 2                                       205  5      "              "         0 --                                      206  5      "              "         1 4                                       207  5      "              CHCH.sub.2                                                                               2 2, 4                                    208  4      "              "         2 2, 4                                    209  5                                                                                      ##STR109##    CHCH.sub.2                                                                               2 2, 4                                    210  4      "              "         2 2, 4                                    211  4      "              CH.sub.2 CH.sub.2 OSO.sub.3 H                                                            1 2                                       212  4      "              "         0 --                                      213  4      "              "         1 4                                       214  5      "              "         1 2                                       215  5      "              "         0 --                                      216  5      "              "         1 4                                       217  4                                                                                      ##STR110##    "         1 2                                       __________________________________________________________________________

In W₁ the marked N-atom is attached to a carbon atom of the phenyl ring.

EXAMPLE 218

10-Parts of 1,4-dichloro-5,8-dihydroxyanthraquinone together with 10 parts of 2,4-diaminotoluene and 10 parts of sodium acetate are stirred in 100 parts of ortho-dichlorobenzene at 130° during 24 hours. While cooling down the compound (218a) ##STR111## precipitates from the reaction mixture. This compound is collected by filtration, washed with a small amount of nitrobenzene and stirred together with 15 parts of 4-(2'-hydroxyethyl)sulfonylaniline and 10 parts of sodium acetate in 100 parts of nitrobenzene at 155° over a period of 30 hours. The dye base (218b) precipitates; it is filtered and washed clean with ethanol and dried. Subsequently, this compound (218b) is converted in sulfuric acid in a manner known per se to yield the compound (218c) ##STR112##

7.2 Parts of the compound (218c) are dissolved in 150 parts of water at pH 7. At 25° an acetone solution of 2.5 parts (20% by weight excess) of 5-cyano-2,4,6-trichloropyrimidine is added thereto in one portion. After 3 to 4 hours the reaction is complete which can be proved by thin layer chromatography.

To isolate the reaction product, sodium chloride is strewed into the mixture while stirring. The precipitate is collected by filtration and dried in vacuo at 500. The obtaine dye has the formula ##STR113## and dyes cotton a brilliant green shade. These dyeings exhibit good fastness properties.

EXAMPLES 219-225

By analogy with the method described in Example 1 or 2, using appropriate starting compounds, further metal-free monoazo compounds may be prepared which are listed in the following Table 20. They correspond to formula (T20) ##STR114## in which the symbols are as defined in Table 20. The compounds of Examples 219 to 225 dye cotton in greenish yellow tones. These dyeings exhibit good fastness properties.

                                      TABLE 20                                     __________________________________________________________________________     compounds of formula (T20)                                                              position of                                                                            position of    position                                       Example No.                                                                           p (SO.sub.3 H).sub.p                                                                   n --(CH.sub.2).sub.n NHZ                                                                 R  R.sub.2                                                                            of --Z.sub.1                                   __________________________________________________________________________     219    2 4, 8  0 6       H  H   3                                              220    2 4, 8  0 6       CH.sub.3                                                                          SO.sub.3 H                                                                         4                                              221    2 4, 8  0 6       H  "   5                                              222    1 1     1 5       H  OCH.sub.3                                                                          4                                              223    1 1     1 5       CH.sub.3                                                                          H   3                                              224    1 1     1 5       H  SO.sub.3 H                                                                         5                                              225    1 1     1 5       H  H   3                                              __________________________________________________________________________

By the preparation methods described in the preceding examples, the compounds of Examples 1-225 are obtained in sodium salt form. By changing the reaction or isolation conditions or by using other known methods, it is possible to produce the compounds in the form of free acid or in other salt forms or mixed salt forms which contain one or more of the cations mentioned hereinabove.

As already mentioned, the dyes of Examples 1 to 225 (and the corresponding free acids and other salt forms) contain two isomeric compounds regarding the group Z ##STR115## one compound in which the floating chlorine substituent on the pyrimidine ring is in the 2-position and the corresponding compound wherein it is in the 6-position, with the former usually predominating, often by a ratio of about 2:1. These isomeric mixtures may be used in conventional dyeing or printing processes; the isolation of a single isomer for use normally is unnecessary.

In the following examples, the application of compounds of this invention is illustrated.

APPLICATION EXAMPLE A

0.3 Part-of the dye of Example 1 is dissolved in 300 parts of demineralised water and 15 parts of Glauber's salt (calcined) is added. The dyebath is heated to 40°, then 10 parts of cotton fabric (bleached) is added. After 30 minutes at 40°, 6 parts of sodium carbonate (calcined) are added to the bath portionwise every 10 minutes applying quantities of 0.2, 0.6, 1.2 and finally 4.0 parts thereof. During the addition of sodium carbonate the temperature is kept at 40°. Subsequently, dyeing is effected for a further one hour at 40°.

The dyed fabric is then rinsed with running cold water for 3 minutes and afterwards with running hot water for a further 3 minutes. The dyeing is washed at the boil for 15 minutes in 500 parts of demineralised water in the presence of 0.25 part of Marseille soap. After being rinsed with running hot water (for 3 minutes) and centrifuged, the dyeing is dried in a cabinet dryer at about 70°. A greenish-yellow cotton dyeing is obtained showing good light- and wet-fastness properties which is stable towards oxidative influences.

APPLICATION EXAMPLE B

To a dyebath containing in 300 parts of demineralised water 10 parts of Glauber's salt (calcined), 10 parts of cotton fabric (bleached) is added. The bath is heated to 40° over a period of 10 minutes, and 0.5 part of the dye of Example 1 is added. After a further 30 minutes at 40°, 3 parts of sodium carbonate (calcined) is added and dyeing is continued at 40° for a further 45 minutes.

The dyed fabric is rinsed with running cold and then hot water and washed at the boil according to the method given in Application Example A. After rinsing and drying, a greenish-yellow cotton dyeing is obtained which has the same good fastness properties as indicated in Application Example A.

Similarly, the dyes of Examples 2-225 or mixtures of the exemplified dyes may be employed to dye cotton in accordance with the method described in Application Example A or B. The cotton dyeings thus obtained exhibit good fastness properties.

APPLICATION EXAMPLE C

A printing paste consisting of

    ______________________________________                                          40 parts of the dye of Example 1                                               100 parts of urea                                                              350 parts of water                                                             500 parts of a 4% by weight sodium alginate thickener and                      10 parts of sodium bicarbonate                                                1000 parts                                                                     ______________________________________                                    

is applied to cotton fabric in accordance with conventional printing methods.

The printed fabric is dried and fixed in steam at 102°-104° for 4-8 minutes. It is rinsed in cold and then hot water, washed at the boil (according to the method described in Application Example A) and dried. A greenish-yellow print is obtained which has good general fastness properties.

Similarly, the dyes of Examples 2 to 225 or mixtures of the exemplified dyes may be employed to print cotton in accordance with the method given in Application Example C. All prints obtained exhibit good fastness properties. 

What is claimed is:
 1. A compound of the formula

    X---O.sub.2 S--W.sub.1 [F.sub.c ]W.sub.2 --NR--Z,

or a water-soluble salt thereof each cation of which is independently a non-chromophoric cation, or a mixture of such compounds or water-soluble salts, wherein F_(c) is a chromophore-containing radical of a monoazo, disazo or polyazo, dye, which is in metal-free or metal complex form, each of W₁ and W₂ is independently a direct bond or a bridging group which is attached to a carbon atom of an aromatic carbocyclic ring or to a carbon or nitrogen atom of an aromatic heterocyclic ring present in F_(c), X is --CH═CH₂ or linear or branched C₂₋₄ alkylene-Y, wherein Y is hydroxy or a group which can be split off under alkaline conditions, R is hydrogen, C₁₋₄ alkyl or C₁₋₄ alkyl monosubstituted by hydroxy, halo, cyano, --SO₃ H, --OSO₃ H or --COOH, and Z is ##STR116## with the provisos that (1) [F_(c) ]does not contain any additional fiber-reactive group, and (2) when --F_(c) ]is the radical of a monoazo dye containing a group (x) as the diazo component radical and a group (y) as the coupling component radical, ##STR117## wherein each m is 0 or 1, then either (2.1) (x) bears the --W₂ --NR--Z group and (y) bears the --W₁ --SO₂ --X group or (2.2) (x) bears the --W₁ --SO₂ --X group, (y) bears the --W₂ --NR--Z group, and W₂ is other than a direct bond.
 2. A compound according to claim 1, or a water-soluble salt thereof each cation of which is independently a non-chromophoric cation, or a mixture of such compounds or water-soluble salts, wherein Y is hydroxy, --OSO₃ H, chloro, bromo, --OPO₃ H₂, --SSO H, --OCOCH₃, --OCOC₆ H₅ or --OSO₂ CH₃.
 3. A compound according to claim 2, or a water-soluble salt thereof each cation of which is independently a non-chromophoric cation, or a mixture of such compounds or water-soluble salts, wherein X is --CH═CH₂ or --CH₂ CH₂ OSO₃ H.
 4. A compound according to claim 1, or a water-soluble salt thereof each cation of which is independently a non-chromophoric cations, or a mixture of such compounds or water-soluble salts, wherein R is hydrogen methyl, ethyl, 2-hydroxyethyl, --(CH₂)_(r) --SO₃ H, --(CH₂)_(r) --OSO₃ H or --(CH₂)_(r) --COOH, wherein r is 1, 2, or
 3. 5. A compound according to claim 1, or a water-soluble salt thereof each cation of which is independently a non-chromophoric cation, or a mixture of such compounds or water-soluble salts, wherein W₁ is a direct bond, straight chain C₁₋₄ alkylene, --Wc--O--Wc-- or ##STR118## wherein each R_(a) is independently hydrogen, methyl, ethyl, 2-hydroxyethyl, --(CH₂)_(r) --SO₃ H, --(CH₂)_(r) --OSO₃ H or --(CH₂)_(r) --COOH, wherein r is 1, 2 or 3,each Wa is independently linear or branched C₁₋₄ alkylene, each Wc is independently linear or branched C₂₋₃ alkylene, each free bond on a phenyl ring is in the meta- or para-position, and the atom denoted with an * is attached to --F_(c) ].
 6. A compound according to claim 5, or a water-soluble salt thereof each cation of which is independently a non-chromophoric cation, or a mixture of such compounds or water-soluble salts, wherein W₁ is a direct bond.
 7. A compound according to claim 1, or a water-soluble salt thereof each cation of which is independently a non-chromophoric cation, or a mixture of such compounds or water-soluble salts, wherein W₂ is a direct bond, linear or branched C₁₋₄ alkylene, linear or branched C₂₋₄ alkylene monosubstituted by hydroxy or ##STR119## wherein R_(a) is hydrogen, methyl, ethyl, 2-hydroxyethyl, --(CH₂)_(r) --SO₃ H, --(CH₂)_(r) --OSO₃ H or --(CH₂)_(r) --COOH, wherein r is 1, 2 or 3,the free bond on the phenyl ring is in the meta- or para-position, and the * denotes the nitrogen atom attached to --F_(c) ].
 8. A compound of the formula ##STR120## or a water-soluble salt thereof each cation of which is independently a non-chromophoric cation, or a mixture of such compounds or water-soluble salts, wherein D₁,2 is D₁ or D₂,where D₁ is ##STR121## and D₂ is ##STR122## wherein p is 1 or 2, D₃ is as defined below, D₃,4 is D₃ or D₄, where D₃ is ##STR123## and D₄ is ##STR124## Q₁ is hydrogen; C₁₋₄ alkyl; C₅₋₆ cycloalkyl; phenyl; phenyl(C₁₋₄ alkyl); phenyl substituted by 1 to 3 substituents independently selected from C₁₋₄ alkyl, C₁₋₄ alkoxy, halo, --SO₃ H and --COOH; phenyl(C₁₋₄ alkyl) the phenyl ring of which is substituted by 1 to 3 substituents independently selected from C₁₋₄ alkyl, C₁₋₄ alkoxy, halo, --SO₃ H and --COOH; --COR₁₁ or C₁₋₄ --alkyl monosubstituted by --SO₃ H, --OSO₃ H or --COR₁₁, Q₂ is hydrogen; cyano; --SO₃ H; --COR₁₁ ; C₁₋₄ alkyl; C₁₋₄ alkyl monosubstituted by hydroxy, halo, cyano, C₁₋₄ alkoxy, ##STR125## --SO₃ H, --OSO₁₃ H or --NH₂ ; ##STR126## wherein An.sup.⊖ is a non-chromophoric anion, R₃ is methyl, --COOH or --CONH₂, R₄ is hydroxy or --NH2, each of R₇ and R^(') ₇ is independently hydrogen, C₁₋₄ alkyl, C₁₋₄ alkoxy, (C₁₋₄ alkyl)carbonylamino or --NHCONH₂, each of R₈ and R₈ is independently hydrogen, C₁₋₄ alkyl, C₁₋₄ alkoxy or --SO₃ H, R₁₀ is hydrogen or C₁₋₄ alkyl, W₃ is linear or branched C₂₋₄ alkylene or linear or branched C₃₋₄ alkylene monosubstituted by hydroxy, W₄ is linear or branched C₂₋₄ alkylene, --Wc--O--Wc--, --Wc--NR--Wc-- or ##STR127## wherein Wb is linear or branched C₂₋₄ alkylene, each Wc is independently linear or branched C₂₋₃ alkylene, and the * denotes the carbon atom attached to the nitrogen atom of the pyridone ring, and m is 0 or 1, wherein each R is independently hydrogen, C₁₋₄ alkyl or C₁₋₄ alkyl monosubstituted by hydroxy, halo, cyano, --SO₃ H, --OSO₃ H or --COOH, each R₁ and R₂ is independently hydrogen, halo, C₁₋₄ alkyl, C₁₋₄ alkoxy, --COOH or --SO₃ H, R₅ is hydrogen, halo, C₁₋₄ alkyl, C₁₋₄ alkoxy, --COOH or --SO₃ H, R₆ is hydrogen, halo, C₁₋₄ alkyl or C₁₋₄ alkoxy, each R₁₁ is independently hydroxy, --NH₂ or C₁₋₄ alkoxy, each R₁₂ is independently hydrogen, C₁₋₄ alkyl or C₂₋₄ --hydroxyalkyl, X is --CH═CH₂ or -linear or branched C₂₋₄ alkylene-Y, wherein Y is hydroxy or a group which can be split off under alkaline conditions, Z is ##STR128## n is 0 or 1, and q is 0,1 or
 2. 9. A compound according to claim 8, or a water-soluble salt thereof each cation of which is independently a non-chromophoric cation, or a mixture of such compounds or water-soluble salts,wherein each R is independently hydrogen, methyl, ethyl, 2-hydroxyethyl, --(CH₂)_(r) --SO₃ H, --(CH₂)_(r) --OSO₃ H or --(CH₂)_(r) --COOH, wherein r is 1, 2 or 3, and X is --CH═CH₂ or --Wb--Y', wherein Wb is linear or branched C₂₋₄ alkylene, and Y' is hydroxy, --OSO₃ H, chloro, bromo, --OPO₃ H₂, --SSO₃ H, --OCOCH₃, --OCOC₆ H₅ or --OSO2CH₃.
 10. A compound according to claim 9, or a water-soluble salt thereof each cation of which is independently a non-chromophoric cation, or a mixture of such compounds or water-soluble salts, wherein X is --CH═CH₂ or --CH₂ CH₂ OSO₃ H.
 11. A compound according to claim 9, or a water-soluble salt thereof each cation of which is independently a non-chromophoric cation, or a mixture of such compounds or water-soluble salts,wherein D₁ is ##STR129## wherein R_(1a) is hydrogen, methyl, methoxy, --COOH or --SO₃ 3, D₂ is ##STR130## wherein m is 0 or 1, D₃ is ##STR131## wherein R_(5a) is hydrogen, methyl, methoxy, --COOH or --SO₃ H, and R_(6a) is hydrogen, methyl or methoxy, D₄ is ##STR132## Q₁ is hydrogen, methyl, ethyl, phenyl, --COR₁₁, --CH₂ SO₃ H or --CH₂ OSO₃ H, and Q₂ is hydrogen, cyano, --SO₃ H, --COR₁₁, methyl, ethyl or --CH₂ SO₃ H, wherein each R and R_(b) is independently hydrogen or methyl, and each of X and X_(b) is --CH═CH₂, --CH₂ CH₂ OH or --CH₂ CH₂ OSO₃ H.
 12. A compound according to claim 9 having the formula ##STR133## or a water-soluble salt thereof each cation of which is independently a non-chromophoric cation, or a mixture of such compounds or water-soluble salts.
 13. A compound according to claim 12, or a water-soluble salt thereof each cation of which is independently a non-chromophoric cation, or a mixture of such compounds or water-soluble salts, wherein D₃ is ##STR134## wherein R_(5a) is hydrogen, methyl, methoxy, --COOH or --SO₃ H, R_(6a) is hydrogen, methyl or methoxy, andX_(b) is --CH═CH₂, --CH₂ CH₂ OH or --CH₂ CH₂ OSO₃ H, and R is hydrogen or methyl.
 14. A compound according to claim 13, or a water-soluble salt thereof each cation of which is independently a non-chromophoric cation, or a mixture of such compounds or water-soluble salts, wherein n is
 0. 15. A compound according to claim 14 having the formula ##STR135## or a water-soluble salt thereof each cation of which is independently a non-chromophoric cation, or a mixture of such compounds or water-soluble salts.
 16. A metal complex according to claim 1 having the formula ##STR136## or a water-soluble salt thereof each cation of which is independently a non-chromophoric cation, or a mixture of such metal complexes or water-soluble salts,wherein R₅ is hydrogen, halo, C₁₋₄ alkyl, C₁₋₄ alkoxy, --COOH or --SO₃ H, each m is independently 0 or 1, n is 0 or 1, and the --O-- and --N═N-- attached to Ring A are ortho to each other and are in the 1,2- or 2,1-positions.
 17. A metal complex according to claim 1, or a water-soluble salt thereof each cation of which is independently a non-chromophoric cation, or a mixture of such metal complexes or water-soluble salts,wherein each R is independently hydrogen, methyl, ethyl, 2-hydroxyethyl, --(CH₂)_(r) --SO₃ H, --(CH₂)_(r) --OSO₃ H or --(CH₂)_(r) --COOH, wherein r is 1, 2 or 3, and X is --CH═CH₂ or --Wb--Y', wherein Wb is linear or branched C₂₋₄ alkylene, and Y' is hydroxy, --OSO₃ H, chloro, bromo, --OPO₃ H₂, --SSO₃ H, --OCOCH₃, --OCOC₆ H₅ or --OSO₂ CH₃.
 18. A metal complex according to claim 1 which is(i) a 1:2 cobalt or 1:2 chromium complex of a monoazo compound of the formula ##STR137## (ii) a 1:2 cobalt or 1:2 chromium complex of two different monoazo compounds of the formula ##STR138## (iii) a 1:2 cobalt or 1:2 chromium complex of a monoazo compound of the formula ##STR139## and another dye capable of forming a metal complex, or a water-soluble salt thereof each cation of which is independently a non-chromophoric cation, or a mixture of such metal complexes or water-soluble salts, wherein R₅ is hydrogen, halo, C₁₋₄ alkyl, C₁₋₄ alkoxy, --COOH or --SO₃ H, R₁₃ is hydroxy, --NH₂ or --COOH, m is 0 or 1, and n is 0 or
 1. 19. A metal complex according to claim 18, or a water-soluble salt thereof each cation of which is independently a non-chromophoric cation, or a mixture of such metal complexes or water-soluble salts,wherein each R is independently hydrogen, methyl, ethyl, 2-hydroxyethyl, --(CH₂)_(r) --SO₃ H, --(CH₂)_(r) --OSO₃ H or --(CH₂)_(r) --COOH, wherein r is 1, 2 or 3, and X is --CH═CH₂ or --Wb--Y', wherein Wb is linear or branched C₂₋₄ alkylene, and Y' is hydroxy, --OSO₃ H, chloro, bromo, --OPO₃ H₂, --SSO₃ H, --OCOCH₃, --OCOC₆ H₅ or --OSO₂ CH₃.
 20. A metal complex of the formula ##STR140## or a water-soluble salt thereof each cation of which is independently a non-chromophoric cation, or a mixture of such metal complexes or water-soluble salts,wherein D₃,4 is ##STR141## wherein R₆ is hydrogen, halo, C₁₋₄ alkyl or C₁₋₄ alkoxy, and q is 0, 1 or 2, R₃ is methyl, --COOH or --CONH₂, R₄ is hydroxy or --NH₂, m is 0 or 1, n is 0 or 1, and ##STR142## wherein each R is independently hydrogen, C₁₋₄ alkyl or C₁₋₄ alkyl monosubstituted by hydroxy, halo, cyano, --SO₃ H, --OSO3H or --COOH, R₅ is hydrogen, halo, C₁₋₄ alkyl, C₁₋₄ alkoxy, --COOH or --SO₃ H, X is --CH═CH₂ or -linear or branched C₂₋₄ alkylene--Y, wherein Y is hydroxy or a group which can be split off under alkaline conditions, and Z is ##STR143## .
 21. A metal complex according to claim 20, or a water-soluble salt thereof each cation of which is independently a non-chromophoric cation, or a mixture of such metal complexes or water-soluble salts, wherein each R is independently hydrogen, methyl, ethyl, 2-hydroxyethyl, --(CH₂)_(r) --SO₃ H, --(CH₂)_(r) --OSO₃ H or --(CH₂)_(r) --COOH, wherein r is 1, 2 or 3, and X is --CH═CH₂ or --Wb--Y', wherein Wb is linear or branched C₂₋₄ alkylene, and Y' is hydroxy, --OSO₃ H, chloro, bromo, --OPO₃ H₂, --SSO₃ H, --OCOCH₃, --OCOC₆ H₅ or --OSO2CH₃.
 22. A process for dyeing or printing an hydroxy group- or nitrogen-containing organic substrate comprising applying to an hydroxy group- or nitrogen-containing organic substrate a compound according to claim 1, or a water-soluble salt thereof each cation, of which is independently a non-chromophoric cation, or a mixture of such compounds or water-soluble salts. 